Title:
METHOD AND SYSTEM FOR CORRECTING FOR CURVATURE IN DETERMINING THE TRAJECTORY OF A PROJECTILE
Document Type and Number:
WIPO Patent Application WO2002082097
Kind Code:
A3
Abstract:
Given a trajectory and unit pointing vectors determined based on a planar or other approximation of a shock wave from a projectile, the times that sensor elements(60, 61, 62) should have detected a shock wave based on the conical geometry of the shock wave are calculated. A difference between the calculated times and the actual times measured at the sensor elements (60, 61, 62) may be minimized by perturbing the unit vector.. The minimization may be performed by perturbing the unit vectors. When the perturbation of the unit vectors results in an acceptable difference between the calculated times and the actual times measured, an accurate trajectory of the projectile is generated from the perturbed unit pointing vectors.
Inventors:
MCNELIS NIALL B
Application Number:
PCT/US2002/010247
Publication Date:
September 12, 2003
Filing Date:
April 03, 2002
Export Citation:
Assignee:
AAI CORP (US)
International Classes:
F42B15/01; F41J5/06; F41J5/12; G01S3/802; G01S3/808; G01S5/20; G01S5/22; (IPC1-7): F41G9/00
Foreign References:
| US3982713A | 1976-09-28 | |||
| US4654528A | 1987-03-31 | |||
| US5430448A | 1995-07-04 | |||
| US5936233A | 1999-08-10 |
Other References:
See also references of EP 1373822A4
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